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free NULL cleanup

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Start ensuring all OpenSSL "free" routines allow NULL, and remove
any if check before calling them.
This gets DH_free, DSA_free, RSA_free

Reviewed-by: Matt Caswell <matt@openssl.org>
This commit is contained in:
Rich Salz
2015-03-24 10:17:37 -04:00
parent 1300705a47
commit d64070838e
34 changed files with 58 additions and 108 deletions
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18
ssl/s3_clnt.c
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@@ -1380,16 +1380,12 @@ int ssl3_get_key_exchange(SSL *s)
param = p = (unsigned char *)s->init_msg;
if (s->session->sess_cert != NULL) {
#ifndef OPENSSL_NO_RSA
if (s->session->sess_cert->peer_rsa_tmp != NULL) {
RSA_free(s->session->sess_cert->peer_rsa_tmp);
s->session->sess_cert->peer_rsa_tmp = NULL;
}
RSA_free(s->session->sess_cert->peer_rsa_tmp);
s->session->sess_cert->peer_rsa_tmp = NULL;
#endif
#ifndef OPENSSL_NO_DH
if (s->session->sess_cert->peer_dh_tmp) {
DH_free(s->session->sess_cert->peer_dh_tmp);
s->session->sess_cert->peer_dh_tmp = NULL;
}
DH_free(s->session->sess_cert->peer_dh_tmp);
s->session->sess_cert->peer_dh_tmp = NULL;
#endif
#ifndef OPENSSL_NO_EC
if (s->session->sess_cert->peer_ecdh_tmp) {
@@ -1955,12 +1951,10 @@ int ssl3_get_key_exchange(SSL *s)
err:
EVP_PKEY_free(pkey);
#ifndef OPENSSL_NO_RSA
if (rsa != NULL)
RSA_free(rsa);
RSA_free(rsa);
#endif
#ifndef OPENSSL_NO_DH
if (dh != NULL)
DH_free(dh);
DH_free(dh);
#endif
#ifndef OPENSSL_NO_EC
BN_CTX_free(bn_ctx);